I have shoulder length hair that's long overdue a cut...straggly and grown out of its style. Unfortunately my Xmas night out occurs before my haircut and I'm thinking it might look better if I curled it a bit? I know you can do it with straighteners but I'm a bit rubbish at that...is there any magic cheap thing around that even someone fairly clueless could make curls with?! Hair is straight-ish to begin with. Thank you!